19109920

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1439}}^1$

素因数の和:1537

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 26612960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1439, 1660, 2656, 2878, 3320, 5756, 6640, 7195, 11512, 13280, 14390, 23024, 28780, 46048, 57560, 115120, 119437, 230240, 238874, 477748, 597185, 955496, 1194370, 1910992, 2388740, 3821984, 4777480, 9554960, 19109920]

約数ペア:

[(1, 19109920), (2, 9554960), (4, 4777480), (5, 3821984), (8, 2388740), (10, 1910992), (16, 1194370), (20, 955496), (32, 597185), (40, 477748), (80, 238874), (83, 230240), (160, 119437), (166, 115120), (332, 57560), (415, 46048), (664, 28780), (830, 23024), (1328, 14390), (1439, 13280), (1660, 11512), (2656, 7195), (2878, 6640), (3320, 5756)]